OK I got my OMD in July 2012, instead of waiting for the OEM batteries, since everyone was on back order, I got the 2 pack Wasabi batteries and they worked great until 2 months ago when they won't hold a charge. I'm waiting to get my replacements from Blue Nook since it's only been 2 years. But I'm worried about them having issues in the future, so as another option I bought an OEM battery as a third backup, just in case. I just opened the box this morning and it has a date code of 2012-11. This battery is almost as old as my original. Now I know it'll probably work ok. But given battery life and how much I use it/charge it etc... Should I return it and ask for a newer one? Buying something from one of the big retailers and having it be this old (especially when at that time of year in 2012 they were VERY hard to find OEM batteries) it makes me worry slightly that this was a return or sitting on some shelf somewhere and might not have as good of a life as a 2014 battery would. I wasn't going to buy it, but I am not wanting to stress about the Wasabis as much. They'll be fine but if they do have issues I want an extra backup. So should I exchange this and ask for one with a new date, or return it and just deal with the Wasabis and maybe get another 2 pack just to be safe? For the price I could buy 4 of them.